高分子保护金属胶体是近年来金属催化剂领域中引人注目的研究课题。它除了具有负载型金属催化剂的优点外,还具备下列新优点:a.胶体分散体系可形成“均相”溶液;b.保护高分子可以屏蔽胶体催化剂,减小毒物或空气的不良影响;c.胶体溶液的透光性能比颗粒要好得多,由此最近高分子保护金属胶体常被用于光化学研究中的催化剂;d.高分子保护金属胶体与普通金属胶体相比较,不仅具有较稳定的特点,而且尺寸小(1—10nm)、分布窄,表现出极高的催化活性和选择性;e.保护高分子对金属的修饰作用,可 Polymer protective metal colloids are the attractive research topics in the field of metal catalysts in recent years. In addition to its advantages of a supported metal catalyst, it has the following new advantages: a. Colloidal dispersion can form a “homogeneous” solution; b. Protecting the polymer can shield the colloidal catalyst to reduce the adverse effects of poison or air; c . Colloidal solution translucent performance is much better than the particles, which recently polymer protective metal colloids are often used in photochemical studies of the catalyst; d polymer macromolecule protective colloidal metal compared with ordinary, not only has a more stable Characteristics, and small size (1-10nm), the distribution of narrow, showing a very high catalytic activity and selectivity; e. Polymer macromolecules on the metal modification can be